DC-DC CONVERTER (i-ELOOP) [i-ELOOP]

id131704503000


Purpose, Function

•  The DC-DC converter (i-ELOOP) supplies the electricity supplied from the capacitor (i-ELOOP) to the vehicle’s electrical devices.
•  If the electricity supplied from the capacitor (i-ELOOP) exceeds the rated voltage of an electrical device, the DC-DC converter (i-ELOOP) lowers the voltage to 12 V and then supplies the electricity to the electrical devices.

Construction

•  The DC-DC converter (i-ELOOP) is installed directly under the front seat (LH).
•  The DC-DC converter (i-ELOOP) has the following inputs/outputs.
ac5wzn00005505

Terminal signal

Input/output
3A
Power is input from capacitor (i-ELOOP).
Power is output to capacitor (i-ELOOP). (Pre-charge)
4A
Power is output to battery and electrical device 1.
Power is input from battery. (Pre-charge)
2A
Power is output to electrical device 2.
2B
Power is input from battery.
1A
CAN communication
1B
GND
1C
CAN communication
1D
GND (Capacitor (i-ELOOP) temperature sensor GND)
1E
Temperature sensor signal input from capacitor (i-ELOOP).
1F
Cranking signal input from PCM.
1G
The by-pass relay on signal from the PCM is input.
1H
Battery power via IG1 relay is input.

•  The DC-DC converter (i-ELOOP) switches the operation content according to the vehicle conditions. Refer to “i-ELOOP” for details. (See i-ELOOP [i-ELOOP].)

Fail-safe

DC-DC converter (i-ELOOP)

DTC

Fail-safe
P0A12:00
•  Inhibits engine-stop by operating the i-stop function.
•  Switches to bypass mode which shuts the capacitor (i-ELOOP) off.
P1794:00
•  Inhibits engine-stop by operating the i-stop function.
•  Inhibits the i-ELOOP control.
P1794:49
P1794:01
•  Inhibits engine-stop by operating the i-stop function.
•  Inhibits the i-ELOOP control.
•  Switches to bypass mode.
P1794:13
P1794:14
P1794:1B
P1794:11
•  Inhibits engine-stop by operating the i-stop function.
•  Inhibits the i-ELOOP control.
•  Inhibits the pre-charge control.
•  Switches to bypass mode.
U0001:88
•  Switches to bypass mode which shuts the capacitor (i-ELOOP) off.
U0100:00
U3000:49
•  Inhibits engine-stop by operating the i-stop function.
•  Switches to bypass mode.

PCM

DTC

Fail-safe
P0A8D:00
•  Inhibits engine-stop by operating the i-stop function.
•  Inhibits the i-ELOOP control.
P0A94:00
•  Inhibits engine-stop by operating the i-stop function.
•  Depending on the type of malfunction, any of the following controls may be implemented. (With i-ELOOP)
―  Transition to i-ELOOP bypass mode.
―  i-ELOOP bypass mode inhibited.
P2502:00
•  Inhibits engine-stop by operating the i-stop function.
•  Generator switch to default mode requested (14.5 V constant voltage power generation).
•  Transition to i-ELOOP bypass mode.
P2504:00
•  Inhibits engine-stop by operating the i-stop function.
•  Generator switch to default mode requested. If the temperature of the generator exceeds the specified value, the generator itself stops power generation. But, if the internal circuit of the generator is malfunctioning, the generator may not accept the demand from the PCM.
U0298:00
•  Inhibits engine-stop by operating the i-stop function.